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Chapter 1 23
Signal Generator Overview
Rear Panel
5. AUXILIARY I/O
This female 37-pin connector is active only on instruments with an internal baseband generator
(Option 601/602); on signal generators without Option 601/602, this connector is non-functional. This
connector provides access to the inputs and outputs described in the following figure.
Figure 1-7 Auxiliary I/O Connector (Female 37-Pin)
ALT PWR IN: Used with an internal baseband
generator. This pin accepts a CMOS signal for
synchronization of external data and alternate power
signal timing. Damage levels are > +8 V and < −4V.
View looking into
rear panel connector
DATA CLK OUT: Used with an internal baseband
generator. This pin relays a CMOS bit clock signal for
synchronizing serial data.
DATA OUT: Used with an internal baseband generator.
This pin outputs data (CMOS) from the internal data
generator or the externally supplied signal at data input.
EVENT 3: Used with an internal baseband generator. In arbitrary waveform mode,
this pin outputs a timing signal generated by Marker 3. A marker (3.3 V CMOS
high for both positive and negative polarity) is output on this pin when a Marker 3 is
turned on in the waveform. Reverse damage levels: > +8 V and < −4V.
PATT TRIG IN 2: Accepts a signal that triggers an
internal pattern or frame generator to start single
pattern output. Minimum pulse width: 100 ns.
Damage levels: > +5.5 V and < −0.5 V.
SYM SYNC OUT: Used with an internal baseband
generator. This pin outputs the CMOS symbol clock for
symbol synchronization, one data clock period wide.
EVENT 4: Used with an internal baseband generator. In arbitrary
waveform mode, this pin outputs a timing signal generated by
Marker 4. A marker (3.3V CMOS high for both positive and
negative polarity) is output on this pin when a Marker 4 is turned
on in the waveform. Reverse damage levels: > +8 V and < −4V.